Publish v12.0.0-dev.31bc8d9 and update preview app

package.json

@@ -1,6 +1,6 @@
 {
   "name": "@ably/ui",
-  "version": "12.0.0-dev.9a060af",
+  "version": "12.0.0-dev.31bc8d9",
   "description": "Home of the Ably design system library ([design.ably.com](https://design.ably.com)). It provides a showcase, development/test environment and a publishing pipeline for different distributables.",
   "repository": {
     "type": "git",

preview/package.json

@@ -2,7 +2,7 @@
   "name": "preview",
   "private": true,
   "dependencies": {
-    "@ably/ui": "12.0.0-dev.9a060af",
+    "@ably/ui": "12.0.0-dev.31bc8d9",
     "@babel/preset-react": "^7.12.5",
     "@rails/ujs": "^6.0.0",
     "@rails/webpacker": "5.4.4",

preview/yarn.lock

@@ -2,10 +2,10 @@
 # yarn lockfile v1
 
 
-"@ably/[email protected].9a060af":
-  version "12.0.0-dev.9a060af"
-  resolved "https://registry.yarnpkg.com/@ably/ui/-/ui-12.0.0-dev.9a060af.tgz#d68ead704fb2543c4be6ac875ab5d460a9e044db"
-  integrity sha512-2mO5YseFruwABEEHQQQreizJN3FuJ33OLNIfIMVn0J+aNkZLqQTB0iOYCU9+8AbUoS2Co/2dfCAG3vx5vOX5jA==
+"@ably/[email protected].31bc8d9":
+  version "12.0.0-dev.31bc8d9"
+  resolved "https://registry.yarnpkg.com/@ably/ui/-/ui-12.0.0-dev.31bc8d9.tgz#6c92ed6c71ab07da9da578e49690abe7b967a3d8"
+  integrity sha512-OS6T3qTK1viSR9pJypcfN76EA/8wZ4WGQqT04bg+Gtseja/3RXHWcUYKuu18zmtUuXnxfUL73dJUIrHI09Aw3A==
   dependencies:
     "@mrtkrcm/cypress-plugin-snapshots" "https://github.com/mrtkrcm/cypress-plugin-snapshots#v1.13.0"
     addsearch-js-client "^0.7.0"